diff mbox

[2/8] ARM: dts: am437x-gp-evm: Add regulator-always-on and regulator-boot-on for RTC DCDCs

Message ID 1438771792-12604-3-git-send-email-j-keerthy@ti.com (mailing list archive)
State New, archived
Headers show

Commit Message

J, KEERTHY Aug. 5, 2015, 10:49 a.m. UTC 
From: Dave Gerlach <d-gerlach@ti.com>

DCDC5 and DCDC6 supply rtc and need to be on for accessing the module.

On A1 revision of the TPS65218, FSEAL bit would be undefined without
coin-cell present which in many cases led to it being set, causing DCDC5
and DCDC6 to stay active, but also leading to unexplained failures when
it was not. On B1 revision, FSEAL is always 0 when no coin-cell is present
so this patch is required on boards with B1 revision to ever work. This
implementation works on boards with either A1 or B1 revision and makes
sure that DCDC5 and DCDC6 always stay active.

Signed-off-by: Dave Gerlach <d-gerlach@ti.com>
Signed-off-by: Keerthy <j-keerthy@ti.com>
---
 arch/arm/boot/dts/am437x-gp-evm.dts | 4 ++++
 1 file changed, 4 insertions(+)

Comments

Tony Lindgren Aug. 5, 2015, 11:20 a.m. UTC | #1 
* Keerthy <j-keerthy@ti.com> [150805 03:53]:
> From: Dave Gerlach <d-gerlach@ti.com>
> 
> DCDC5 and DCDC6 supply rtc and need to be on for accessing the module.
> 
> On A1 revision of the TPS65218, FSEAL bit would be undefined without
> coin-cell present which in many cases led to it being set, causing DCDC5
> and DCDC6 to stay active, but also leading to unexplained failures when
> it was not. On B1 revision, FSEAL is always 0 when no coin-cell is present
> so this patch is required on boards with B1 revision to ever work. This
> implementation works on boards with either A1 or B1 revision and makes
> sure that DCDC5 and DCDC6 always stay active.
> 
> Signed-off-by: Dave Gerlach <d-gerlach@ti.com>
> Signed-off-by: Keerthy <j-keerthy@ti.com>

Applying patches 1 & 2 into omap-for-v4.3/dt thanks.

Tony
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diff mbox

Patch

diff --git a/arch/arm/boot/dts/am437x-gp-evm.dts b/arch/arm/boot/dts/am437x-gp-evm.dts
index 84aa30c..816027b 100644
--- a/arch/arm/boot/dts/am437x-gp-evm.dts
+++ b/arch/arm/boot/dts/am437x-gp-evm.dts
@@ -455,6 +455,8 @@ 
 			regulator-name = "v1_0bat";
 			regulator-min-microvolt = <1000000>;
 			regulator-max-microvolt = <1000000>;
+			regulator-boot-on;
+			regulator-always-on;
 		};
 
 		dcdc6: regulator-dcdc6 {
@@ -462,6 +464,8 @@ 
 			regulator-name = "v1_8bat";
 			regulator-min-microvolt = <1800000>;
 			regulator-max-microvolt = <1800000>;
+			regulator-boot-on;
+			regulator-always-on;
 		};
 
 		ldo1: regulator-ldo1 {